jpt
Ensign
Posts:163
 | | 20 Nov 2011 09:03 PM | | Starting the build of the Tirpitz. hull cut out with 1/8 armor belt stringer. 
| | | |
|
jpt
Ensign
Posts:163
| | 20 Nov 2011 10:41 PM | | adding strength and attach locations for BB protection.
  | | | |
|
Nick
Veteran
Rear Admiral (RDML)
Posts:1247
| |
jpt
Ensign
Posts:163
| | 22 Nov 2011 09:35 PM | | not sure what size it it, but it is big, came with the kit from strike models. think it is the same motor alex has in his bismark | | | |
|
jpt
Ensign
Posts:163
| | 23 Nov 2011 08:32 PM | | installing drive shaft and motor
.. | | | |
|
thegeek
Veteran
Ensign
Posts:232
| | 24 Nov 2011 08:03 AM | | The motor is a 6 volt Johnson hc970. They pull about 18 amps at 6 volts with a 2" or so prop. | | | |
|
Ron Hunt
Veteran
Ensign
Posts:152
| | 24 Nov 2011 09:38 AM | | What drive voltage do you plan on running?
Ron Hunt
| | | |
|
jpt
Ensign
Posts:163
| | 24 Nov 2011 10:44 AM | | ron,
going to use a speed controler..viber marine about 40 amps. Think that would be large enough
thegeek
thx for the info above.
what size amp speed controler would you sugest? | | | |
|
Iceman
Rear Admiral (RDML)
Posts:1220
| | 24 Nov 2011 10:50 AM | | 40 amp might smoke..... I fried 3 of them | | Rob A.
USS Alabama
USS Arizona
USS Saratoga
DKM Bismarck
USS John Brown
http://groups.yahoo.com/group/NYBG/ | |
|
Ron Hunt
Veteran
Ensign
Posts:152
| | 24 Nov 2011 11:06 AM | | Depends on the voltage you run, the lower the voltage the higher the amp draw. I'm running a 25 in my Nagato powering 2 motors on 13.2 volts. That pulls 10-15 amps. We have 2 Tirpitz locally and have been experimenting with drive for a while. I think we settled on 12 volts with 2 Titan marines geared down about 2 to 1 and a 1 7/8" 5 blade prop, Vicious P could probably tell you more since one of the Tirpitz is his. I think he lost a 40 amp recently but it might have been previously damaged and only partially functional. I don't recommend using the bec on the speed control for anything, if you fry the bec you lose the speed control, and they are a little under powered. Castle creations makes a decent 10 amp and 20 amp bec that seem to be pretty durable.
Ron Hunt | | | |
|
jpt
Ensign
Posts:163
| | 24 Nov 2011 01:43 PM | | ron,
using 6 volt, lead acid sealed batterys, at least two, maybe more depending on how the layout in the boat works outl
the batterys in parallel, so the voltage stays at 6 volts.
not planning on gearying down right now, using 1/1 that came with the kit. just read up on the bec...Battery Eliminator Circuit....yes, sounds like it is better to get a speed controler with out bec. then you will not have any noise between the reciever and motor voltage and both are isolated. they did say the new sc ones, are much better now and most of this problem has been eliminated. | | | |
|
jpt
Ensign
Posts:163
| | 24 Nov 2011 02:41 PM | | picks of drive shaft layout and ready for expoying in motor support and shaft support.
| | | |
|
thegeek
Veteran
Ensign
Posts:232
| | 24 Nov 2011 03:09 PM | | 40 amp control should work fine. But the SLA batteries might have a hard time giving 18 amps for a whole hour (normal time for one battle). | | | |
|
thegeek
Veteran
Ensign
Posts:232
| | 24 Nov 2011 03:10 PM | | Also the motor mounts have to be bigger in foot print. Too small and they will torque and rip from the bottom. | | | |
|
jpt
Ensign
Posts:163
| | 24 Nov 2011 03:59 PM | | motor mounts, yes I was wonder and thinking about that, due to the size of the engine. with this motor mount, a couple csk screw from the out side into the bottom of the motor mount should stregthing it more than enought. saw this idea from a build thread. | | | |
|
jpt
Ensign
Posts:163
| | 24 Nov 2011 04:17 PM | | motor mount and shaft support expoyed in.
| | | |
|
Daemon
Ensign
Posts:99
| | 24 Nov 2011 05:17 PM | | Looking nice - bracing behind the stringers is a great idea - first build thread I've seen using that.
Daemon | | | |
|
McSpuds
Ensign
Posts:115
| | 26 Nov 2011 12:32 PM | | Yes I like the idea of putting wood back there...... Will be on my next build for sure. Good job! | | | Current builds: Mutsu; Baden (Total Refit); North Carolina; Viribus Unitis | |
|
jpt
Ensign
Posts:163
| | 27 Nov 2011 09:19 PM | | drive shaft installed, used some glass for reinforcing 
the gelcoat chiped off during drilling, but fille it back in with expoy 
| | | |
|
Nick
Veteran
Rear Admiral (RDML)
Posts:1247
| |